JP2000288122A - Golf ball - Google Patents
Golf ballInfo
- Publication number
- JP2000288122A JP2000288122A JP11097117A JP9711799A JP2000288122A JP 2000288122 A JP2000288122 A JP 2000288122A JP 11097117 A JP11097117 A JP 11097117A JP 9711799 A JP9711799 A JP 9711799A JP 2000288122 A JP2000288122 A JP 2000288122A
- Authority
- JP
- Japan
- Prior art keywords
- cover
- golf ball
- hardness
- covers
- core
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明が属する技術分野】本発明は飛び特性が優れたソ
リッドタイプのゴルフボ−ルに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid golf ball having excellent flight characteristics.
【０００２】[0002]
【従来の技術】ゴルフボ−ルは、糸ゴムを球状に巻き付
けて形成した芯をバラタカッバ−で被覆した、いわゆる
糸ゴムタイプと、反発係数が高い硬質ゴム製の球芯（コ
ア）を引き裂き抵抗並びに耐摩耗性に優れる樹脂カバ−
で被覆した、いわゆるソリッドタイプが一般的である
が、後者の方が飛距離の面で優れているところから、ゴ
ルファ−には、このタイプの方が圧倒的に好評である。2. Description of the Related Art A golf ball has a so-called thread rubber type in which a core formed by winding a thread rubber in a spherical shape is covered with a balata caver, and a hard rubber ball core having a high coefficient of restitution has a tear resistance and Resin cover with excellent wear resistance
The so-called solid type, which is generally coated with a rubber, is generally popular among golfers because the latter is superior in flight distance.
【０００３】しかしながら、ソリッドゴルフボ−ルは、
ヒットしたときの比較的硬い打感、ショ−トアイアンに
よる打球のスピンがかかり難いなど、未だ改良の余地が
あり、これ等に対して次のような改良例が知られてい
る。その第１は、コアとカバ−の間に、カバ−よりも硬
度が低い比較的薄肉の樹脂製中間層を配置した構造であ
る。[0003] However, solid golf balls are
There is still room for improvement, such as a relatively hard feel when hitting, and the difficulty of spinning a hit ball with a short iron, and the following improved examples are known. The first is a structure in which a relatively thin resin intermediate layer having a lower hardness than the cover is disposed between the core and the cover.
【０００４】そして第２は、上記樹脂中間層をコアとカ
バ−の間に配置した構造において、例えば特開平１０−
２１６２７０号公報にみられるように、中間層（以下内
カバ−と云う）の表面全体に小突起を設け、その外側を
カバ−（以下外カバ−と云う）によって被覆したもので
ある。これに類似する構造として、小突起を外カバ−の
内周面に設け、上記内カバ−内へ突出させた構造も提案
されている。この場合も内カバ−は、通常外カバ−より
硬度が低い樹脂材が用いられ、また突起の高さは、内カ
バ−上に設ける場合、外カバ−の厚みよりも多少低く、
また外カバ−側に設けたときは、内カバ−の厚みよりも
多少低く設定される場合が多い。そうすることによっ
て、内カバ−より延びる突起相互間には外カバ−材が、
または外カバ−より延びる突起相互間には内カバ−材が
介在するため、ゴルフボ−ルを半径方向にみたとき小突
起の部分は、外カバ−と内カバ−をミックスした性質の
第三の層が実質上存在することとなる。Second, in a structure in which the resin intermediate layer is disposed between a core and a cover, for example, Japanese Patent Application Laid-Open No.
As shown in JP-A-216270, small projections are provided on the entire surface of an intermediate layer (hereinafter referred to as an inner cover), and the outside thereof is covered with a cover (hereinafter referred to as an outer cover). As a similar structure, there has been proposed a structure in which small projections are provided on the inner peripheral surface of the outer cover and protrude into the inner cover. Also in this case, the inner cover is usually made of a resin material having a lower hardness than the outer cover, and the height of the projection, when provided on the inner cover, is slightly lower than the thickness of the outer cover.
Also, when it is provided on the outer cover side, it is often set slightly lower than the thickness of the inner cover. By doing so, the outer cover material is interposed between the protrusions extending from the inner cover,
Alternatively, since the inner cover material is interposed between the protrusions extending from the outer cover, when the golf ball is viewed in the radial direction, the portion of the small protrusion is a third type having the property of mixing the outer cover and the inner cover. The layer will be substantially present.
【０００５】[0005]
【発明が解決しようとする課題】このような内カバ−か
ら外カバ−内へ、または外カバ−から内カバ−内へ多数
の突起が延びる構造は、上に述べたボ−ルをヒットした
ときの打感と、スピンのかかり難さの面で多少の改善は
みられるが、十分とは云えず、なお改良の余地を残して
いると云うのが現状である。本発明は上記問題点に鑑み
なされたもので、打感の改善およびロフトが大きいショ
−トアイアンでヒットしたとき、ボ−ルへのスピンが増
大し、一方ロフトが小さい、特にドライバ−でヒットし
たときは、逆にスピンがかかり難く、従って飛距離が稼
げると云う、飛び性能に優れるゴルフボ−ルを提供する
ことを目的とする。Such a structure in which a large number of protrusions extend from the inner cover into the outer cover or from the outer cover into the inner cover has hit the ball described above. Although some improvements have been seen in terms of the feel at impact and the difficulty in applying spins, it is not enough, and there is still room for improvement. The present invention has been made in view of the above-mentioned problems, and when hitting with a short iron having an improved hit feeling and a large loft, the spin to the ball increases, while hitting with a small loft, particularly a driver. It is another object of the present invention to provide a golf ball having excellent flight performance, in which the spin is hardly applied and the flight distance can be increased.
【０００６】[0006]
【課題を解決するための手段】本発明は、球状の硬質ゴ
ム製コアを内側から順に第１カバ−、第２カバ−および
第３カバ−と少なくとも３層のゴム、または樹脂材によ
って被覆したゴルフボ−ルにおいて、上記第２カバ−
は、径方向外側に開口する多数の小孔を有する一方、上
記第３カバ−はその内面に上記第２カバ−の小孔内へ延
びる多数の突起を形成し、またこれらカバ−は、第１、
第２、第３カバ−の順に硬度が高いことを特徴とするゴ
ルフボ−ルである。According to the present invention, a spherical hard rubber core is coated with a first cover, a second cover and a third cover and at least three layers of rubber or resin material in this order from the inside. In the golf ball, the second cover
Has a number of small holes that open radially outward, while the third cover has on its inner surface a number of projections that extend into the small holes of the second cover, and these covers are 1,
A golf ball having higher hardness in the order of the second and third covers.
【０００７】[0007]
【発明の実施の形態】本発明においては、上記第２カバ
−に設けた小孔は０．５〜４mm の直径を有し、５０〜
５００個周上に実質上均等に設けることが好ましい。ま
た第２カバ−の小孔は、この第２カバ−の厚みの５０〜
１００％が好ましく、７０〜１００％がより好ましい。
また、上記第１、第２、第３カバ−は、それぞれ１０〜
５０°、１０〜５５°および４０〜７０°の範囲のショ
アD 硬度を有し、且つこれ等硬度範囲において第１、第
２、第３カバ−の順に高いことが好ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the small holes provided in the second cover have a diameter of 0.5 to 4 mm, and have a diameter of 50 to 4 mm.
It is preferable to provide substantially evenly on 500 circumferences. The small hole of the second cover has a thickness of 50 to 50 mm.
100% is preferable, and 70 to 100% is more preferable.
Further, the first, second, and third covers are 10 to 10 respectively.
It is preferable to have Shore D hardness in the range of 50 °, 10-55 ° and 40-70 °, and to increase in the first, second and third covers in this hardness range.
【０００８】[0008]
【実施例】以下図面に基づき説明する。図１は本発明を
における一実施例を示すゴルフボ−ルの断面図であり、
図２は、同ボ−ル第２カバ−の平面拡大図であるする。
図１においてゴルフボ−ル1 は、中心部を占めるコア2
を順次被覆した第１カバ−3 、第２カバ−4 および第３
カバ-5 よりなる。最も外側の第３カバ−5 の外表面
は、図示を省略しているが、常法により多数のディンプ
ルを具備する。BRIEF DESCRIPTION OF THE DRAWINGS FIG. FIG. 1 is a sectional view of a golf ball showing one embodiment of the present invention.
FIG. 2 is an enlarged plan view of the second cover of the ball.
In FIG. 1, a golf ball 1 has a core 2 occupying the center.
The first cover 3, the second cover 4 and the third cover
It consists of hippo-5. Although not shown, the outer surface of the outermost third cover 5 is provided with a large number of dimples in a conventional manner.
【０００９】コア2 の材質については、特に限定はない
が、例えばポリブタジエンゴム、ポリイソプレンゴム、
天然ゴム、シリコンゴム等を主成分とする加硫ゴムを用
いることが出来る。しかし、反発性を高めるためには、
ポリイソプレンゴムを主成分とする加硫ゴムが好適であ
り、この実施例において適用している。コア2 の硬さ
は、１００kg の荷重をコア2 に加えたときの変形量と
して、２〜６mm が好ましい。The material of the core 2 is not particularly limited. For example, polybutadiene rubber, polyisoprene rubber,
Vulcanized rubber mainly composed of natural rubber, silicon rubber, or the like can be used. However, to increase resilience,
A vulcanized rubber containing polyisoprene rubber as a main component is preferable, and is used in this embodiment. The hardness of the core 2 is preferably 2 to 6 mm as the amount of deformation when a load of 100 kg is applied to the core 2.
【００１０】コア2 と隣り合って配置される第１カバ−
3 の材料については、樹脂材料、ゴム材料の何れでもよ
く、従って特別限定はないが、耐久性の面から耐衝撃性
に強いポリエステルエラストマ−、アイオノマ−樹脂、
ウレタン系樹脂、スチレン系エラストマ−、水添ブタジ
エン樹脂等を主成分として用いることができる。第1カ
バ−3 の硬さとして、ショアD 硬度が１０〜５0°、好
ましくは１５〜３５°である。また同カバ−3 の厚みは
０．５〜５mm が好ましい。A first cover arranged adjacent to the core 2
The material (3) may be either a resin material or a rubber material, and thus is not particularly limited. However, polyester elastomer, ionomer resin, and the like which have high impact resistance from the viewpoint of durability.
Urethane-based resins, styrene-based elastomers, hydrogenated butadiene resins, and the like can be used as main components. The hardness of the first cover 3 is a Shore D hardness of 10 to 50 °, preferably 15 to 35 °. The thickness of the cover 3 is preferably 0.5 to 5 mm.
【００１１】図1において第１カバ−3 と隣り合って配
置された、第２カバ−4 の材料についても、樹脂材料、
ゴム材料の何れでもよく特に限定はないが、耐久性の面
から耐衝撃性に強いポリエステルエラストマ−、アイオ
ノマ−樹脂、ウレタン系樹脂、スチレン系エラストマ
−、水添ブタジエン樹脂等を主成分として用いることが
できる。第２カバ−4 の硬さとして、ショアD 硬度が１
０〜５５°、好ましくは１５〜４０°の範囲にあって上
記第１カバ−3 の硬度よりも大であることを要する。同
カバ−4 の厚みは０．５〜５mm が好ましいThe material of the second cover 4 disposed adjacent to the first cover 3 in FIG.
Any of rubber materials may be used, and there is no particular limitation. However, polyester elastomer, ionomer resin, urethane resin, styrene elastomer, hydrogenated butadiene resin, etc., having high impact resistance in terms of durability, are used as the main components. Can be. As the hardness of the second cover-4, Shore D hardness is 1
It must be in the range of 0 to 55 °, preferably 15 to 40 °, and greater than the hardness of the first cover 3. The thickness of the cover 4 is preferably 0.5 to 5 mm.
【００１２】図１において第２カバ−4 に近接し、且つ
最も外側に配置された第３カバ−5の材料は、耐摩耗、
耐カット性に優れるアイオノマ−樹脂、ウレタン系樹
脂、ポリエステル系樹脂およびバラタゴムを含む混合物
を使用することができる。第３カバ−5 の硬さとして、
ショアD 硬度は４０〜７０°、より好ましくは５０〜６
５°の範囲にあって、上記第２カバ−の硬度よりも大で
あることを要する。第３ カバ−4 の厚みは、後述する
突起の高さをの除いて０．５〜４．０mm である。In FIG. 1, the material of the third cover 5, which is located close to the second cover 4 and located on the outermost side, is made of a material having high wear resistance.
A mixture containing an ionomer resin, a urethane-based resin, a polyester-based resin, and balata rubber having excellent cut resistance can be used. As the hardness of the third cover 5,
Shore D hardness is 40-70 °, more preferably 50-6
It must be in the range of 5 ° and greater than the hardness of the second cover. The thickness of the third cover 4 is 0.5 to 4.0 mm except for the height of a projection described later.
【００１３】第２カバ−4 には、周囲全体に亘り径方向
外側に向かって開口した小孔7 が５０〜５００個実質上
均等に配置され（図２）、これら小孔7 内に第３カバ−
5 の一部が内側表面より突出進入し充満することによっ
て突起9 を形成している。小孔の直径は最大部分で０．
5〜４mm であり、小孔の形状は円筒状、ボ−ル中心に向
かって先細りの円錐形状、円錐台状等の形状が考えら
れ、また深さは内カバ−の厚みの５００〜１００％、好
ましくは７０〜１００％である。図示の例では１００
％、即ち、円筒状貫通孔を形成している。In the second cover 4, 50 to 500 small holes 7 which open radially outward over the entire periphery are arranged substantially evenly (FIG. 2). Cover
The projection 9 is formed by a portion of 5 projecting from the inner surface and being filled. The diameter of the stoma is 0.
5 to 4 mm, the shape of the small hole may be a cylindrical shape, a conical shape tapering toward the center of the ball, a frusto-conical shape, or the like, and the depth is 500 to 100% of the thickness of the inner cover. , Preferably 70 to 100%. 100 in the example shown
%, That is, a cylindrical through hole is formed.
【００１４】コア2 、第１カバ−3 、第２カバ−4 それ
ぞれの外側表面には、深さ０．０１〜０．２mm の凹凸
粗面を形成することができる。そうすることによって、
コア2と接する第１カバ−3 、第１カバ−3 と接する第
２カバ−4 、そして第２カバ−4 と接する第３カバ−5
それぞれの内表面の一部が上記凹凸粗面に馴染むように
入り組み、凹凸界面を形成することとなる。上記凹凸粗
面を形成する場合は、コアおよび第１、第２、第３カバ
−それぞれを成形するとき使用する金型の内壁面に、ロ
−レット加工、サンドブラスト等のショットブラスト加
工、または各種研磨加工を施した金型を用い、凹凸粗面
を直接型付けしたり、滑らかな内壁面を備えた金型を用
いて形成した成形体（コア、第１および第２カバ−）
を、例えば必要な粗さのサンドペ−パ−、または砥石を
貼り付けたボ−ルミル内に入れて回転させたり、また成
形体に対しセンタレス研磨、バレル研磨、サンドブラス
ト等のショットブラスト等によって凹凸、または粗面を
設けることができる。On the outer surface of each of the core 2, the first cover 3 and the second cover 4, a roughened surface having a depth of 0.01 to 0.2 mm can be formed. By doing so,
A first cover 3 in contact with the core 2, a second cover 4 in contact with the first cover 3, and a third cover 5 in contact with the second cover 4
A part of each inner surface fits into the above-mentioned rough surface, and forms an uneven interface. When the rough surface is formed, the inner wall surface of a mold used for molding the core and the first, second, and third covers may be knurled, shot blasted such as sand blasting, or various types. Molded body (core, first and second covers) formed by directly shaping an uneven rough surface using a polished mold or using a mold having a smooth inner wall surface
Into a ball mill with a required roughness, such as sand paper or a grindstone, and rotate it.Alternatively, the molded article is made uneven by centerless polishing, barrel polishing, shot blasting such as sand blasting, etc. Alternatively, a rough surface can be provided.
【００１５】本発明になる実施例のゴルフボ−ルと、比
較例３種類のゴルフボ−ルの間で打撃テストを行い飛び
性能を評価した。テストに使用したボ−ルの内容につい
ては表１に示し、テスト結果を表２に示す。A hit test was performed between the golf ball of the example according to the present invention and three types of golf balls of Comparative Example to evaluate the flight performance. Table 1 shows the contents of the balls used in the test, and Table 2 shows the test results.
【００１６】表１ 表２ Table 1 Table 2
【００１７】表１において、コア欄の硬さとは、平板上
でコアに１００kg の荷重を加えたときの変形量を示
し、硬度とはショアD 硬度を意味する。表１には表示を
省略しているが、４層構造の実施例１、比較例２および
３は、共通してコア半径を１７．１mm とし、第１カバ
−の厚みを１．２mm 、第２カバ−の厚みを１．３mm 、
第３カバ−の厚みを１．７mm した。一方３層構造の比
較例１について、コアの半径を１７．３mm 、第２カバ
−（内カバ−）の厚みを２．０mm 、第３カバ−（外カ
バ−）の厚みを２．０mm とした。また実施例１、比較
例１、２および３には、共通して第２カバ−に対し、図
１および２に示す小孔7 として直径１．０mm の円筒状
貫通孔を３００個周上均等に設けると共に、第１カバ−
の内周面にこれ等の小孔を満たす突起9 を形成した。In Table 1, the hardness in the core column indicates the amount of deformation when a load of 100 kg is applied to the core on a flat plate, and the hardness means Shore D hardness. Although not shown in Table 1, in Example 1, Comparative Examples 2 and 3 having a four-layer structure, the core radius is commonly set to 17.1 mm, the thickness of the first cover is set to 1.2 mm, and the thickness of the first cover is set to 1.2 mm. The thickness of the two covers is 1.3 mm,
The thickness of the third cover was 1.7 mm. On the other hand, in Comparative Example 1 having a three-layer structure, the core radius was 17.3 mm, the thickness of the second cover (inner cover) was 2.0 mm, and the thickness of the third cover (outer cover) was 2.0 mm. did. In Example 1 and Comparative Examples 1, 2, and 3, 300 small cylindrical through-holes having a diameter of 1.0 mm as the small holes 7 shown in FIGS. And the first cover
A projection 9 was formed on the inner peripheral surface to fill these small holes.
【００１８】表２において、Ｗ１、Ｉ９およびＳＷは、
それぞれ１番ウッド、９番アイアンおよびサンドウェッ
ジを意味し、ＨＳはヘッドスピ−ドを、そしてこれと並
記はれた２桁の数値はそれ等の値（m/s）である。In Table 2, W1, I9 and SW are:
HS stands for head speed, and the two-digit numbers alongside these are their respective values (m / s), meaning 1 wood, 9 iron and sand wedge, respectively.
【００１９】[0019]
【発明の効果】本発明になるゴルフボ−ルは、表２に示
されているように、全体に比較的ソフトな打感が得ら
れ、ロフトが大きいショ−トアイアンでヒットしたと
き、ボ−ルへのスピンが増大し、一方ロフトが小さい、
ドライバ−でヒットしたときは、逆にスピンがかかり難
く、従って飛距離を有利にが稼げるのである。As shown in Table 2, the golf ball according to the present invention has a relatively soft feel on impact as a whole, and when hit with a short iron having a large loft, the ball can be used. To the spin, while the loft is small,
On the other hand, when a hit is made with the driver, the spin is hardly applied, so that the flight distance can be advantageously increased.
【図１】本発明の一実施例を示すゴルフボ−ルの断面
図。FIG. 1 is a sectional view of a golf ball showing one embodiment of the present invention.
【図２】図１における第２カバ−の平面拡大図。FIG. 2 is an enlarged plan view of a second cover in FIG. 1;
1 ゴルフボ−ル 2 コア 3 第１カバ− 4 第２カバ− 5 第３カバ− 7 小孔 9 突起 1 Golf ball 2 Core 3 1st cover 4 2nd cover 5 3rd cover 7 Small hole 9 Projection
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【手続補正書】[Procedure amendment]
【提出日】平成１２年７月２６日（２０００．７．２
６）[Submission date] July 26, 2000 (2007.2
6)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】請求項１[Correction target item name] Claim 1
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】[0006]
【課題を解決するための手段】本発明は、球状の硬質ゴ
ム製コアを内側から順に第１カバ−、第２カバ−および
第３カバ−と少なくとも３層のゴム、または樹脂材によ
って被覆したゴルフボ−ルにおいて、上記第２カバ−
は、径方向外側に開口する多数の小孔を有する一方、上
記第３カバ−はその内面に上記第２カバ−の小孔内へ延
びる多数の突起を形成すると共に、これらカバ−は、シ
ョアＤ硬度が第１カバー＜第２カバー＜第３カバ−の関
係にあることを特徴とするゴルフボ−ルである。According to the present invention, a spherical hard rubber core is coated with a first cover, a second cover and a third cover and at least three layers of rubber or resin material in this order from the inside. In the golf ball, the second cover
Has a large number of small holes that open radially outward, while the third cover has a large number of projections extending on the inner surface thereof into the small holes of the second cover. A golf ball having a D hardness satisfying a relationship of first cover <second cover <third cover.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００７[Correction target item name] 0007
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００７】[0007]
【発明の実施の形態】本発明においては、上記第２カバ
−に設けた小孔は０．５〜４mm の直径を有し、５０〜
５００個周上に実質上均等に設けることが好ましい。ま
た第２カバ−の小孔は、この第２カバ−の厚みの５０〜
１００％が好ましく、７０〜１００％がより好ましい。
また、上記第１、第２、第３カバ−は、それぞれ１０〜
５０°、１０〜５５°および４０〜７０°の範囲のショ
アD 硬度を有し、且つこれ等硬度範囲において第１、第
２、第３カバ−の順に外側カバーほど高いことが好まし
い。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the small holes provided in the second cover have a diameter of 0.5 to 4 mm, and have a diameter of 50 to 4 mm.
It is preferable to provide substantially evenly on 500 circumferences. The small hole of the second cover has a thickness of 50 to 50 mm.
100% is preferable, and 70 to 100% is more preferable.
Further, the first, second, and third covers are 10 to 10 respectively.
It is preferable that the outer cover has a Shore D hardness in the range of 50 °, 10-55 ° and 40-70 °, and that the hardness of the outer cover is higher in the order of the first, second and third covers in these hardness ranges.
Claims (5)
カバ−、第２カバ−および第３カバ−と少なくとも３層
のゴム、または樹脂材によって被覆したゴルフボ−ルに
おいて、上記第２カバ−は、径方向外側に開口する多数
の小孔を有する一方、上記第３カバ−はその内面に上記
第２カバ−の小孔内へ延びる多数の突起を形成し、また
これらカバ−は、第１、第２、第３カバ−の順に硬度が
高いことを特徴とするゴルフボ−ル。1. A spherical hard rubber core is firstly arranged in order from the inside.
In a golf ball covered with a cover, a second cover and a third cover, and at least three layers of rubber or resin material, the second cover has a number of small holes that open radially outward. The third cover has on its inner surface a number of projections extending into the small holes of the second cover, and these covers have higher hardness in the order of the first, second and third covers. A golf ball characterized by the following.
４mm の直径を有することを特徴とする請求項１記載の
ゴルフボ−ル。2. The small hole provided in the second cover is 0.5 to
The golf ball of claim 1 having a diameter of 4 mm.
の５０〜１００％の深さを有することを特徴とする請求
項１乃至２記載のゴルフボ−ル。3. The golf ball according to claim 1, wherein the small holes of the second cover have a depth of 50 to 100% of the cover thickness.
を有することを特徴とする請求項１乃至３記載のゴルフ
ボ−ル。4. The golf ball according to claim 1, wherein said second cover has 50 to 500 small holes.
１０〜５０°、１０〜５５°および４０〜７０°のショ
アD 硬度を有することを特徴とする請求項１乃至４記載
のゴルフボ−ル。5. The system according to claim 1, wherein said first, second and third covers have a Shore D hardness of 10 to 50 °, 10 to 55 ° and 40 to 70 °, respectively. Golf ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09711799A JP4182308B2 (en) | 1999-04-05 | 1999-04-05 | Golf ball |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09711799A JP4182308B2 (en) | 1999-04-05 | 1999-04-05 | Golf ball |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000288122A true JP2000288122A (en) | 2000-10-17 |
| JP4182308B2 JP4182308B2 (en) | 2008-11-19 |
Family
ID=14183638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP09711799A Expired - Fee Related JP4182308B2 (en) | 1999-04-05 | 1999-04-05 | Golf ball |
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| Country | Link |
|---|---|
| JP (1) | JP4182308B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002331048A (en) * | 2001-05-08 | 2002-11-19 | Bridgestone Sports Co Ltd | Golf ball cover composition and golf ball |
| US6955613B2 (en) | 2003-01-10 | 2005-10-18 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| US7192367B2 (en) | 2003-03-31 | 2007-03-20 | Mizuno Corporation | Multi-piece golf ball, manufacturing method thereof and mold for manufacturing the same |
| US7326130B2 (en) | 2004-06-09 | 2008-02-05 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| US7326129B2 (en) | 2004-03-19 | 2008-02-05 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| JP2013000168A (en) * | 2011-06-13 | 2013-01-07 | Yokohama Rubber Co Ltd:The | Golf ball |
| JP2020099679A (en) * | 2018-12-20 | 2020-07-02 | アクシュネット カンパニーＡｃｕｓｈｎｅｔ Ｃｏｍｐａｎｙ | Minimal curved surface golf ball components |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2698831C1 (en) * | 2018-06-19 | 2019-08-30 | Илья Николаевич Новиков | Method and apparatus for processing carbon-containing material |
-
1999
- 1999-04-05 JP JP09711799A patent/JP4182308B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002331048A (en) * | 2001-05-08 | 2002-11-19 | Bridgestone Sports Co Ltd | Golf ball cover composition and golf ball |
| US6955613B2 (en) | 2003-01-10 | 2005-10-18 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| US7169065B2 (en) | 2003-01-10 | 2007-01-30 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| US7192367B2 (en) | 2003-03-31 | 2007-03-20 | Mizuno Corporation | Multi-piece golf ball, manufacturing method thereof and mold for manufacturing the same |
| US7326129B2 (en) | 2004-03-19 | 2008-02-05 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| US7326130B2 (en) | 2004-06-09 | 2008-02-05 | Mizuno Corporation | Multi-piece golf ball and manufacturing method thereof |
| JP2013000168A (en) * | 2011-06-13 | 2013-01-07 | Yokohama Rubber Co Ltd:The | Golf ball |
| JP2020099679A (en) * | 2018-12-20 | 2020-07-02 | アクシュネット カンパニーＡｃｕｓｈｎｅｔ Ｃｏｍｐａｎｙ | Minimal curved surface golf ball components |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4182308B2 (en) | 2008-11-19 |
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